题解 | #Financial Management#
Financial Management
https://www.nowcoder.com/practice/c046a2eade034db58cdfdaf58f894489
#Python版代码
print('$%.2f' % (sum((eval(input())) for _ in range(12)) / 12))
#或者
from statistics import mean
print('$%.2f' % mean((eval(input())) for _ in range(12)))